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Weather Blog: Heat index to approach triple digits

By Jeremy Nelson, WeatherWatch 12 Meteorologist

Published On: Jul 16 2013 11:24:20 AM CDT

Thank you for stopping by the Weather Watch 12 blog! The hottest weather of the summer arrives over the next several days. In today's blog we discuss how high the heat index will climb, plus look ahead to when a few showers may temporarily cool us off.

Let's start with the rest of today. Highs in the upper 80s to low 90s are expected along with a few isolated showers or thunderstorms. The timeframe for showers will run from around 1pm to 7pm. As the sun begins to set so will the chance for a shower or thunderstorm. Any thunderstorms that develops will have the potential to produce heavy downpours.

So far 2013 has only produced one 90 degree day in Milwaukee, that should change this week with highs either side of 90 each day. The NAM forecast temperature map below is valid at 4pm Wednesday. Notice temperatures hovering close to 90. The heat will be half the story, with the other half being the high dew points.

Dew points, or the measure of surface moisture will remain in the 70s this week. This will lead to the air having a tropical feel. With temperatures around 90, and high humidity, the heat index will begin to climb. Expect heat indices to close in on 100 degrees each day through Friday. The heat index chart is shown below.

The tips to beat the heat are straightforward, but worth mentioning again. Make sure to stay hydrated by drinking plenty of water. Any strenuous activity should be completed in the early morning or late evening with temperatures are slightly cooler. Wear light colored, loose fitting clothing.

And more important, the heat impacts the elderly, kids, and pets most. Please take extra care as the heat peaks this week!

Make sure to stay with Weather Watch 12 for updates on the heat and rain chances throughout the week.

For the latest weather information watch WISN 12 News, and for updates throughout the day follow me on Twitter @jnelsonweather

Have a great day!

Jeremy Nelson

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